Haldeman, Jack C., II. "Death of a Dream"
Divergence: 1963 CE
What if: J. Egar Hoover decided to smear Martin Luther King, Jr. just before he gave the "I Have a Dream" speech, and the civil rights movement fell apart.
Summary: A decade later, MLK prepares to assassinate law-n-order President Richard J. Dailey and weeps over the race war which has been consuming the country.
Published: In Alternate Warriors (ed. Mike Resnick), q.v.